Matsuka Y, Iijima T, Suzuki K, Kuboki T, Yamashita A
Department of Fixed Prosthodontics, Okayama University Dental School, Japan.
J Oral Rehabil. 1998 Sep;25(9):687-93. doi: 10.1046/j.1365-2842.1998.00285.x.
The purpose of this study was to investigate the relationship between osseous changes in the temporomandibular joint (TMJ) and dental attrition in the Japanese macaque. One hundred and thirty Japanese macaque skulls (54 male and 76 female) from animals which had been bred in the same environment, were randomly sampled from a collection at the Primate Research Institute of Kyoto University. The age at death had been recorded in all cases. TMJ osseous changes were independently evaluated by three examiners, and were defined as an irregular surface or a perforated compact bone layer with a markedly irregular surface on either the temporal or condylar components. Age was a significant factor in predicting TMJ osseous changes (P < 0.001). A strong relation was observed between age and dental attrition (P < 0.001), while dental attrition was not a significant factor in predicting TMJ osseous changes (P = 0.334). The prevalence TMJ osseous changes in male animals was slightly higher than in females (P = 0.057). The results of this study suggest that osseous changes in the macaque TMJ are mainly related to age, not to dental attrition.
本研究的目的是调查日本猕猴颞下颌关节（TMJ）的骨质变化与牙齿磨损之间的关系。从京都大学灵长类动物研究所的一批样本中，随机抽取了130个在相同环境中饲养的日本猕猴头骨（54个雄性和76个雌性）。所有样本均记录了死亡年龄。由三名检查人员独立评估TMJ的骨质变化，其定义为颞骨或髁突部分表面不规则或致密骨层穿孔且表面明显不规则。年龄是预测TMJ骨质变化的一个重要因素（P < 0.001）。年龄与牙齿磨损之间存在密切关系（P < 0.001），而牙齿磨损不是预测TMJ骨质变化的显著因素（P = 0.334）。雄性动物TMJ骨质变化的发生率略高于雌性（P = 0.057）。本研究结果表明，猕猴TMJ的骨质变化主要与年龄有关，而非牙齿磨损。
